Convert US/ISO prose dates (2026-06-21) to EU format (21.jun.2026) across colibri
docs + wiki. Left as-is (data, not prose): the captured JSON "time" timestamp in
AGENT-EVENTS-REFERENCE and the rustc/cargo version strings in
CLAWDIE-INSTALLER-HANDOFF — ISO is correct for machine timestamps/filenames.
Gates: wiki-lint --strict clean; markdown format clean.